<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="shortcut icon" href="./images/batman-logo-01.png">
  <title>黑暗骑士的网站</title>

  <link rel="stylesheet" href="./css/flex1.css">
</head>

<body>

  <div class="fullpage">
    <div>
      
      <div>全屏幕居中</div>
      <div>
        用户：<input type="text">
      </div>
      <div>
        密码：<input type="password">
      </div>

    </div>
  </div>


</body>

</html>